What is the Proto-Indo-European reconstruction, if there is one, of the Latin suffixes -tivus (many examples) and -vus/-uus/-ivus (arvus, residuus, cadivus)? I read in a non-reliable source once that it came from Proto-Indo-European *-wos, but no actual source I have researched so far confirms so, so I am guessing that that -vus<-wos claim is either an unconfirmed possibility or wrong.
Introduction to Indo-European Linguistics by Oswald Szemerényi mentions no Latin in its section for *-wos (pg 319), only Greek and Indic and Gothic.
On the Syntax of the Participles of Indo-European Deponents by Laura Grestenberger, -uos/-us lists only Greek, Illyrian, and Tocharian as having inherited this suffix.
And Proto-Indo-European by Mate Kapović only gives us this:
So, where do these Latin suffixes come from, if it is known?